[ xdvi-Bugs-2902167 ] Bug? Incorrect rendering of combining characters in Hebrew

Bugs item #2902167, was opened at 2009-11-22 21:52
Message generated for change (Comment added) made by stefanulrich
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Category: fonts
Group: incorrect behaviour
Status: Open
Resolution: None
Priority: 5
Private: No
Submitted By: Technion (technioniit)
Assigned to: Nobody/Anonymous (nobody)
Summary: Bug?  Incorrect rendering of combining characters in Hebrew

Initial Comment:
Bug?  Incorrect rendering of combining characters in Hebrew

This is complicated; I'm not even sure if it's a bug in xdvik.
(This is my first bug report in my entire life, and I'm not a professional developer, so apologies in advance.)

Using Ivritex + Culmus-latex + ucs packages, Hebrew nequddot (vowel points) don't get rendered properly as combining characters when the .dvi file is displayed in xdvi; however, the subsequent PostScript file generated from the .dvi file using dvips typesets the vowel points correctly (as does subsequent conversion of the resulting PostScript file to PDF, so it seems that the .dvi file is okay).

This bug report is probably going to be useless as there are just too many packages and LaTeX .sty files involved.

Uploaded files in xdvi.tar:
  - ivritex.tex:  LaTeX demo input file (but this also invokes a number of other files)
  - ivrit.tex:  Template file used by ivritex.tex (invokes several LaTeX/TeX packages)
  - ivritex.dvi:  .dvi file created by latex (MacTeX-2009, 20091108 release)
  - ivritex_xdvi.tiff:  Screenshot of above dvi file as rendered by xdvi from MacTeX-2009 running under Apple Mac OS X 10.5.8 Leopard; note that vowel points INCORRECTLY get rendered following (to the left of) the corresponding base characters, rather than directly underneath/above, as if there were no support for combining characters
  - ivritex.ps:  PostScript file generated from the above .dvi file; here the vowel points are typeset correctly
  - ivritex.pdf:  PDF file generated from above PostScript file, with vowel points rendered correctly

NOTE:  Had to omit ivritex.ps from xdvi.tar above; PS file is ~ 600 kB; maximum size of files uploaded as part of bug reports = 256 kB.
However, the PDF file above was generated directly from the PostScript file (which itself was generated directly from the .dvi file)

Using MacTeX-2009, release of 20091108.

xdvi version:  xdvik version 22.84.16 (Xaw toolkit); Libraries: kpathsea version 5.0.0, T1lib version 5.1.2
uname -a:  Darwin mac.local 9.8.0 Darwin Kernel Version 9.8.0: Wed Jul 15 16:57:01 PDT 2009; root:xnu-1228.15.4~1/RELEASE_PPC Power Macintosh
X -version:  X.org Release 7.3; X.Org X Server 1.4.2-apple33; Build Date: 20090617

xdvi -debug shows that the correct fonts with nekkudot (vowel points) are getting loaded


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>Comment By: Stefan Ulrich (stefanulrich)
Date: 2009-11-23 21:34

Message:
Hi,

this is really difficult to reproduce since it requires all those packages
and fonts (tried to install the Nikud package, but I didn't manage to get
the fonts installed properly). It could be a problem with the font metrics
or a bug in xdvik. Is the result the same when you use "xdvi -not1lib
ivritex"?

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